Sensor 1 is the upstream sensor before the catalytic converter; are you sure you hooked everything up properly? P1148 is a short or issue with the O2 sensor wiring. Make sure you don't have any significant leaks from the header to test pipe connection either.
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-320whp / 259wftlbs-
SP Rays -- RE-11s -- SpecialtyZ Tune -- Swift Springs -- Stillen 25R Oil Cooler -- Stillen G3 Intakes -- Berk HFCs -- F.I. 12" CBE -- Stillen Sway Bars -- Es14 Spring -- INGS+1 lip -- CF Spoiler -- GTR Start Button -- VLED Parking Lights -- PWJDM V2 shift knob
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